论文部分内容阅读
1988年交城县农业局引进水稻旱育稀植栽培技术,当年示范20亩,之后迅速扩展到离石、中阳、临县、方山等地,面积逐年扩大,单产进一步提高,1991年全区推广4500余亩,平均亩产400公斤,最高亩产达603公斤,创历史最高纪录。一、水稻旱育苗 1.育苗①苗床选择:选择背风向阳、排灌方便,偏酸性的肥沃地或庭院内。②做床:一般秧床宽1.6米,床与床之间的通道60厘米,上年秋天深翻整地,每平方米施有机肥10公斤,氯肥20—25克,磷肥18—21克,混于床面10厘米全层,然后整平。在播种前3天,将300克硫酸用水稀释喷于床面,边喷边翻,混和均匀,要求床土pH值4.5—6之间。③种子处理:用比重为1.08克/厘米~3的盐水选种,除去庇籽、杂质。然后用0.3％的多菌灵浸
In 1988 Jiaocheng County Bureau of Agriculture introduced rice dry cultivation techniques, the demonstration of 20 acres, then rapidly expanded to Lishi, Zhongyang County, Fangshan and other places, the area has expanded each year, to further improve yields in 1991, all District to promote more than 4,500 acres, the average yield of 400 kg, the highest yield of 603 kilograms, the highest record. First, rice drought nursery 1. Nursery ① seedbed selection: Choose lee sunny, irrigation and drainage convenience, acidic or fertile garden or inside. ② to do bed: general seedbed width of 1.6 meters, 60 cm between the bed and the bed, deep fall last autumn, 10 kg of organic fertilizer per square meter, 20-25 grams of chlorine fertilizer, 18-21 grams of phosphate fertilizer, Mixed in the bed 10 cm full layer, and then leveling. 3 days before sowing, the 300 grams of sulfuric acid diluted with water sprayed on the bed, while spraying edge turn, mix well, the bed soil pH value between 4.5-6. ③ seed treatment: with a specific gravity of 1.08 g / cm ~ 3 salt selection, removal of shelled seeds, impurities. Then use 0.3% carbendazim